.box{
    height: 400px;
    width: 500px;
    margin: 100px auto;
}
.top{
    height: 175px;
    width: 100%;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}
.top button{
    height: 50px;
    width: 21%;
    margin-top: 25px;
    background-color: aqua;
}
.center{
    height: 100px;
}
input{
    height: 50px;
    width: 80%;
    margin-left: 10%;
    margin-top: 25px;
    border: 1px solid #eee;
}
.bottom{
    display: flex;
    justify-content: space-around;
}
.bottom button{
    height: 80px;
    width: 28%;
    background-color: blue;
}
.change1 , .change2{
    box-sizing: border-box;
    border: 2px solid orangered;
}